Niacinamide Usage:Niacin
is used for high cholesterol. It is also used along with other treatments for
circulation problems, migraine headache, dizziness, and to reduce the diarrhea
associated with cholera. Niacin is also used for preventing positive urine drug
screens in people who take illegal drugs.

Niacinamide is used for treating diabetes and two skin
conditions called bullous pemphigoid and granuloma annulare.